Coating in-situ spraying and fixed-point repairing equipment, power supply system and gas path system

Abstract

The utility model discloses coating in-situ spraying fixed-point repairing equipment, a power supply system and a gas path system, and belongs to the technical field of coating repairing. The repairing equipment comprises a telescopic frame, a laser head assembly, a spray gun head assembly and a heating head assembly. The telescopic frame comprises a triangular sucker, a mounting head, a three-way switch and a telescopic arm; the mounting head is mounted on the triangular sucker through a screw; the three-way switch and the telescopic arm are respectively mounted on the mounting head through screws; the laser head assembly, the spray gun head assembly and the heating head assembly are movably connected with the telescopic arm. The repairing equipment disclosed by the utility model has the advantages of miniaturization and intellectualization; the device can be used for fixed-point repair of a small-range coating of an aircraft outfield and repair of a coating of a narrow part in a repair space, meets the requirement of outfield autonomous rapid repair, has the functions of cleaning of an original damaged coating, spraying of a new coating and curing of the new coating, and is convenient to operate and easy to master.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coating repair technology, in particular to a coating in-situ spraying and spot repair device, a power supply system and a gas path system. BACKGROUND

[0002] Coating repair is to polish and paint the damaged part of the paint surface, and to cure the paint surface, so that the repaired part reaches or approaches the original state and performance.

[0003] At present, China's military aircraft has begun to be deployed in large quantities, and during the service of the coating, under the combined action of high temperature, airflow erosion and other factors, the stealth coating of the engine high temperature adjusting piece, the aircraft skin cover, the connecting part of the movable surface, etc. will appear bulging, edge collapse, peeling, performance degradation and other problems, and the related performance will change irreversibly, resulting in partial performance attenuation, increasing the failure probability and increasing the risk of being attacked in war. At the same time, the field coating repair is still in its infancy, mainly relying on aircraft manufacturers for repair. During the repair process of the manufacturer, each aircraft part to be repaired needs to be disassembled, then each part is repaired separately, and after the repair is completed, the whole machine needs to be reinstalled and the safety performance is inspected before it can be put into use again. When encountering a small repair space, the operator needs to carry the repair equipment and repair manually, remove the original damaged coating, spray new coating, and finally use the baking lamp or hot air equipment to cure, which usually takes several hours or even one or two days to operate. The existing repair process also has the problems of long maintenance cycle and difficult repair process for officers and soldiers to master, and it is difficult to realize self-repairing and rapid repair of the army.

[0004] Therefore, developing a small and intelligent repair device mainly used for spot repair of small range coating and repair of small space coating is the key to solve the problem, which meets the requirements of field self-repairing and rapid repair, contains the functions of cleaning the original damaged coating, spraying new coating and curing new coating, and is easy to operate and master. SUMMARY

[0005] In view of the problems of long maintenance cycle, difficult repair process for officers and soldiers to master and difficulty in self-repairing and rapid repair of the existing technology, the present application provides a coating in-situ spraying and spot repair device, a power supply system and a gas path system.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] A coating in-situ spraying spot repair device, power supply system and gas circuit system, comprising a telescopic frame 1, a laser head assembly 2, a spray gun head assembly 3 and a heating head assembly 4; the telescopic frame 1 comprises a triangular suction cup 5, a mounting head 6, a three-way switch 7 and a telescopic arm 8; the mounting head 6 is installed on the triangular suction cup 5 by screws, and the three-way switch 7 and the telescopic arm 1 are respectively installed on the mounting head 6 by screws; the laser head assembly 2, the spray gun head assembly 3 and the heating head assembly 4 are movably connected with the telescopic arm 8.

[0008] The mounting head 6 comprises a connecting rod fixed block 9, a bearing fixed sleeve 10, a rolling bearing 11 and a fixed head 12; the connecting rod fixed block 9 is installed on the bearing fixed sleeve 10 by screws; the rolling bearing 11 is embedded in the bearing fixed sleeve 10, and the fixed head 12 is inserted into the rolling bearing 11; the fixed block 9 is movably connected with the telescopic arm 8 by a knob; the fixed head 12 is installed above the triangular suction cup 5 by screws; when the triangular suction cup 5 is adsorbed beside the area to be repaired during the repair work of the repair device, the repair device rotates 360° through the rolling bearing 11 when the telescopic arm 8 is pulled.

[0009] The three-way switch 7 comprises a three-way switch mounting plate 13 and a three-position four-way valve 14; the upper end surface of the three-way switch mounting plate 13 is connected with the three-position four-way valve 14 by screws; the lower end surface of the three-way switch mounting plate 13 is fixedly connected with the upper surface of the fixed block 9 by screws.

[0010] The telescopic arm 8 has three groups, and each group of telescopic arms comprises a first telescopic rod 15, a second telescopic rod 16 and a fixed head 17; the first telescopic rod 15 and the second telescopic rod 16 are movably connected, and the second telescopic rod 16 and the fixed head 17 are movably connected.

[0011] The laser head assembly 2 comprises a fixed plate 18, a laser head 19 and a telescopic limiting rod 20; the laser head 19 is fixedly installed by screws; the telescopic limiting rod 20 is fixedly installed on the fixed plate 18 by screws; the fixed plate 18 is connected with the fixed block 9 by screws; the cleaning distance of the laser head 19 is controlled by the telescopic limiting rod 20, and the maximum length of the telescopic limiting rod pulled out is the required cleaning distance of the laser head 19, which is convenient and fast when determining the cleaning distance; when not in use, the telescopic limiting rod is manually pushed in and retracted to reduce interference in the laser cleaning operation process.

[0012] The spray gun head assembly 3 comprises a spray gun fixed body 18-1, a telescopic limiting rod 20-1, an automatic spray gun 21 and a material tank 22.

[0013] The said tank 22 includes tank cover 23, piston 23-1, piston port 24-5, tank body 24, 24-4 is the welding site, the charging hole 24-2, 24-1 is the discharge port, 24-3 is the stirring hole, stirring motor 25 and fixed cap 25-1; the piston 23-1 is put into the tank through the piston port 24-5 on the tank body 24, the tank cover 23 is screwed to the tank body 24, the paint needed for spraying is injected into the tank through the charging hole 24-2 on the tank body 24, and the paint is filled until the piston 23-1 stops against the tank cover 23, then the charging hole 24-2 is covered with a sealing cap, and the stirring motor 25 is put into the stirring hole 24-3 on the tank body 24; after the repair equipment is filled with paint, the stirring motor 25 is started, so that the paint in the tank body 24 is always in a stirred state, preventing the paint from depositing or solidifying; the stirring motor 25 is fixed by the fixed cap 25-1, and the welding part 24-4 of the tank body 24 is welded on the wall of the second telescopic rod 16; the joint of the tank cover 23 is connected with the air pipe, the air pressure pushes the piston 23-1 downward, forcing the paint to be squeezed out from the discharge port 24-1 of the tank body 24, and the discharge port 24-1 of the tank body 24 is connected with the feeding port of the automatic spray gun 21; during the spraying process of the repair equipment, the piston 23-1 squeezes the paint out of the discharge port 24-1 to the automatic spray gun 21 through air pressure, and the stirring motor 25 is always in a stirring state, preventing the paint from depositing or solidifying.

[0014] The said heating head assembly 4 includes fixed joint 26, infrared temperature sensor 27, heating device 28, hot air nozzle 29, temperature display screen 30-1; the fixed joint 26 is fixedly connected with the fixed block 9, the infrared temperature sensor 27 passes through the fixed joint 26 and the heating device 28 and is connected with the fixed joint 26 by a screw.

[0015] The said heating device 28 includes sleeve 28-1, heating wire 28-2 and connecting head 28-3; the connecting head 28-3 is connected with the air pipe, the airflow is sprayed out from the hot air nozzle 29 through the sleeve 28-1, the hot air nozzle 29 is screwed at one end of the sleeve 28-1, the heating wire 28-2 is connected with the power supply, the airflow is heated to form hot air sprayed out from the hot air nozzle 29; the infrared temperature sensor 27 detects the infrared radiation temperature of the repair surface in real time to monitor the temperature of the repair surface, and displays the temperature in real time through the temperature display screen 30; during the repair of the equipment, the operator adjusts the distance between the heating head assembly 4 and the repair surface to change the real-time display temperature of the temperature display circuit 30, which provides a temperature basis for the heat curing operation and ensures the rationality of the heat curing temperature; when the required temperature for curing is reached, the distance between the heating head assembly 4 and the repair surface is fixed.

[0016] A power supply system of a coating in-situ spraying fixed-point repair device, the power supply system comprising a temperature display circuit 30, a stirring motor power supply circuit 33, a hot air gun power supply circuit 35, a laser cleaning head power supply circuit 39; the power supply supplies power to the temperature display screen 30-1, the stirring motor 25, the automatic spray gun 21 and the laser head 19 through the temperature display circuit 30, the stirring motor power supply circuit 33, the hot air gun power supply circuit 35 and the laser cleaning head power supply circuit 39 respectively.

[0017] An air path system of a coating in-situ spraying fixed-point repair device, the air path system comprising a spray gun atomizing port circuit 31, a tank air inlet circuit 32, a hot air gun air inlet circuit 34, a spray gun feed inlet circuit 36, a spray gun control port circuit 40 and a three-position four-way valve circuit 14; the air inlet pipe supplies air to the spray gun atomizing port, the tank air inlet and the three-position four-way valve through the spray gun atomizing port circuit 31, the tank air inlet circuit 32 and the three-position four-way valve circuit 14 respectively; the three-position four-way valve supplies air to the hot air gun air inlet and the spray gun control port through the hot air gun air inlet circuit 34 and the spray gun control port circuit 40 respectively; the tank air inlet supplies air to the spray gun feed inlet through the spray gun feed inlet circuit 36.

[0018] Compared with the prior art, the application has the following beneficial effects:

[0019] (1) The application simultaneously comprises a laser head assembly, a spray gun head assembly and a heating head assembly, the original damaged coating is cleaned by laser ablation of the laser head assembly, the coating is sprayed by the automatic spray gun, and the sprayed surface is heated and solidified by the hot air of the heating head assembly, so that the repair device simultaneously has the cleaning function of the original damaged coating, the coating spraying function and the coating solidification function, the replacement of the repair device in the spraying repair process is reduced, the use is more convenient, and the application function is more comprehensive;

[0020] (2) The folding and storage of the telescopic rod are realized by adjusting the movable connection part, the telescopic rod is portable and convenient to carry, and the application is suitable for the rapid repair of external factory stealth coatings;

[0021] (3) In the spraying repair process, the length of the telescopic rod of the adjustable movable connection part can be adjusted to adjust the spraying range, the device is fixed near the repaired surface through the three-legged suction cup, the three-legged suction cup is adsorbed or detached through the manual pressing mode, the repair process is convenient and fast, the application range is wide, the repair can be performed on a relatively small curved surface and a smooth curved surface in a relatively small space, and the repair is suitable for complex parts of a machine body;

[0022] (4) The cleaning distance of the laser head and the spraying distance of the spray gun can be controlled by the telescopic limiting rod, the maximum length of the telescopic limiting rod pulled out is the required cleaning distance and spraying distance of the spray gun, which is convenient and fast to determine the cleaning distance and spraying distance of the spray gun, the repair process is easy to be mastered by the officers and soldiers, and the independent and rapid repair support of the army is easy to realize; meanwhile, the telescopic limiting rod can be manually pushed in and retracted when not in use, thereby reducing the interference in the laser cleaning operation process;

[0023] (5) The stirring motor is installed on the side of the material tank, the coating is continuously stirred during the spraying repair process, coating precipitation can be prevented, and the uniformity of the repair coating can be ensured.

[0024] (6) The infrared temperature measurement probe directly measures the temperature of the surface of the repaired part, and the temperature of the surface of the repaired part is displayed in real time through the display screen, so that the temperature basis for heat curing operation is provided, and the reasonable heat curing temperature is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure schematic diagram of the present application;

[0026] Figure 2 is the telescopic frame structure schematic diagram of the present application;

[0027] Figure 3 is the mounting head structure schematic diagram of the present application;

[0028] Figure 3 , Figure 3 (a) is the overall assembly drawing of the mounting head structure, Figure 3 (b) is the split schematic diagram of the mounting head structure;

[0029] Figure 4 is the three-way switch structure schematic diagram of the present application;

[0030] Figure 4 , Figure 4 (a) is the overall assembly drawing of the three-way switch, Figure 4 (b) is the split schematic diagram of the three-way switch;

[0031] Figure 5 is the telescopic arm structure schematic diagram of the present application;

[0032] Figure 6 is the laser head assembly structure schematic diagram of the present application;

[0033] Figure 7 is the spray gun head assembly structure schematic diagram of the present application;

[0034] Figure 7 , Figure 7 (a) is the overall assembly drawing of the spray gun head assembly, Figure 7 (b) is the split schematic diagram of the spray gun head assembly;

[0035] Figure 8 Figure 1 is a schematic diagram of the material tank structure of the present application;

[0036] Figure 8 In the figure, the black solid line represents the gas circuit system; the red solid line represents the power supply system; Figure 8 (a) is a whole assembly drawing of the material tank structure, Figure 8 (b) is a schematic diagram of the material tank structure;

[0037] Figure 9 Figure 2 is a schematic diagram of the device circuit structure of the present application;

[0038] Figure 9 In the figure, the black solid line represents the gas circuit system; the red solid line represents the power supply system;

[0039] Figure 10 Figure 3 is a framework diagram of the device power supply system of the present application;

[0040] Figure 11 Figure 4 is a framework diagram of the device gas circuit system of the present application.

[0041] In the figure: 1 - telescopic frame; 2 - laser head assembly; 3 - spray gun head assembly; 4 - heating head assembly; 5 - triangular chuck; 6 - mounting head; 7 - three-way switch; 8 - telescopic arm; 9 - connecting rod fixed block; 10 - bearing fixing sleeve; 11 - rolling bearing; 12 - fixed head; 13 - three-way switch mounting plate; 14 - three-position four-way valve; 15 - first-stage telescopic rod; 16 - second-stage telescopic rod; 17 - fixed head; 18 - fixed plate; 18-1 is a spray gun fixing body; 19 - laser head; 20 - telescopic limiting rod; 21 - automatic spray gun; 22 - material tank; 23 - material tank cover; 23-1 is a piston; 24-1 is a discharge port; 24-2 is a charging hole; 24-3 is a stirring hole; 24-4 is a welding part; 24-5 is a piston port; 24 - material tank body; 25 - stirring motor; 25-1 is a fixed cap; 26 - fixed connector; 27 - infrared temperature sensor; 28 - heating device; 28-1 is a sleeve; 28-2 is a heating wire; 28-3 is a connecting head; 29 - hot air nozzle; 30 - temperature display circuit; 30-1 is a temperature display screen; 31 - spray gun air inlet circuit; 32 - material tank air inlet circuit; 33 - stirring motor power supply circuit; 34 - hot air gun air inlet circuit; 35 - hot air gun power supply circuit; 36 - paint inlet circuit; 37 - circuit; 38 - air inlet pipe; 39 - laser cleaning head power supply circuit; 40 - spray gun pneumatic control switch circuit. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application clearer, the following further describes the embodiments of the present application by combining with the accompanying drawings in the embodiments.

[0043] As Figure 1 and Figure 2As shown, an in-situ coating spraying and fixed-point repair device, power supply system, and air circuit system include a telescopic frame 1, a laser head assembly 2, a spray gun head assembly 3, and a heating head assembly 4; the telescopic frame 1 includes a triangular suction cup 5, a mounting head 6, a three-way switch 7, and a telescopic arm 8; the mounting head 6 is mounted on the triangular suction cup 5 by screws, and the three-way switch 7 and the telescopic arm 1 are respectively mounted on the mounting head 6 by screws; the laser head assembly 2, the spray gun head assembly 3, and the heating head assembly 4 are movably connected to the telescopic arm 8.

[0044] like Figure 3 As shown, the mounting head 6 includes a connecting rod fixing block 9, a bearing fixing sleeve 10, a rolling bearing 11, and a fixing head 12. The connecting rod fixing block 9 is installed on the bearing fixing sleeve 10 by screws. The rolling bearing 11 is embedded in the bearing fixing sleeve 10, and then the fixing head 12 is inserted into the rolling bearing 11. The fixing block 9 and the telescopic arm 8 are movably connected by a knob. The fixing head 12 is installed above the triangular suction cup 5 by screws. When the repair equipment is working, the triangular suction cup 5 is attached to the side of the area to be repaired. When the telescopic arm 8 is pulled, the repair equipment can rotate 360° through the rolling bearing 11.

[0045] like Figure 4 As shown, the three-way switch 7 includes a three-way switch mounting plate 13 and a three-position four-way valve 14; the upper end face of the three-way switch mounting plate 13 is connected to the three-position four-way valve 14 by screws; the lower end face of the three-way switch mounting plate 13 is fixedly connected to the upper surface of the fixing block 9 by screws.

[0046] like Figure 5 As shown, the telescopic arm 8 includes three sets of telescopic arms, each set of telescopic arms including a primary telescopic rod 15, a secondary telescopic rod 16 and a fixed head 17; the primary telescopic rod 15 and the secondary telescopic rod 16 are movably connected, and the secondary telescopic rod 16 and the fixed head 17 are movably connected.

[0047] like Figure 6 As shown, the laser head assembly 2 includes a fixing plate 18, a laser head 19, and a telescopic limiting rod 20. The fixing plate 18 secures the laser head 19 with screws. The telescopic limiting rod 20 is also secured to the fixing plate 18 with screws. The fixing plate 18 and the fixing block 9 are connected by screws. The cleaning distance of the laser head 19 is controlled by the telescopic limiting rod 20. The maximum length of the telescopic limiting rod is the required cleaning distance of the laser head 19, making it convenient and quick to determine the cleaning distance. When not in use, the telescopic limiting rod can be manually pushed in and retracted to reduce interference during the laser cleaning operation.

[0048] like Figure 7As shown, the spray gun head assembly 3 includes spray gun fixed body 18-1, telescopic limiting rod 20-1, automatic spray gun 21, tank 22; the tank 22 includes tank cover 23, tank body 24, stirring motor 25; piston 23-1 is put into the tank through the piston port 24-5 on the tank body 24, the tank cover 23 is screwed to the tank body 24, the paint needed for spraying is injected into the tank through the charging hole 24-2 on the tank body 24, the paint is filled until the piston 23-1 is pressed against the tank cover 23, then the charging hole 24-2 is covered with a sealing cap, the stirring motor 25 is put into the stirring hole 24-3 on the tank body 24; after the repair equipment is filled with paint, the stirring motor 25 is started, so that the paint in the tank body 24 is always in a stirring state, preventing the paint from depositing or solidifying; the stirring motor 25 is fixed by the fixing cap 25-1, the welding part 24-4 of the tank body 24 is welded on the wall of the second telescopic rod 16; the joint of the tank cover 23 is connected to the air pipe, the air pressure presses the piston 23-1 downward, forcing the paint to be squeezed out from the discharge port 24-1 of the tank body 24, the discharge port 24-1 of the tank body 24 is connected with the inlet of the automatic spray gun 21; during the spraying process of the repair equipment, the piston 23-1 squeezes the paint from the discharge port 24-1 to the automatic spray gun 21 by air pressure, and the stirring motor 25 is always in a stirring state to prevent the paint from depositing or solidifying.

[0049] As shown in Figure 8 The heating head assembly 4 includes a fixed joint 26, an infrared temperature sensor 27, a heating device 28, a hot air nozzle 29, and a temperature display screen 30-1; the fixed joint 26 is fixedly connected with the fixed block 9, the infrared temperature sensor 27 passes through the fixed joint 26 and the heating device 28 and is connected with the fixed joint 26 by screws.

[0050] The heating device 28 includes a sleeve 28-1, a heating wire 28-2, and a joint 28-3; the joint 28-3 is connected with the air pipe, the airflow is sprayed from the hot air nozzle 29 through the sleeve 28-1, the hot air nozzle 29 is screwed at one end of the sleeve 28-1, the heating wire 28-2 is connected with the power supply, the airflow is heated to form hot air sprayed from the hot air nozzle 29; the infrared temperature sensor 27 detects the infrared radiation temperature of the repair surface in real time to monitor the temperature of the repair surface, and displays the temperature in real time on the temperature display screen 30-1; during the repair of the equipment, the operator adjusts the distance between the heating head assembly 4 and the repair surface to change the real-time display temperature of the temperature display screen 30-1, providing a temperature basis for the heat curing operation and ensuring the rationality of the heat curing temperature; when the required temperature for curing is reached, the distance between the heating head assembly 4 and the repair surface is fixed.

[0051] As shown in Figure 9 and Figure 10As shown in the figure, a power supply system of a coating in-situ spraying fixed-point repair device, the power supply system includes temperature display circuit 30, stirring motor power supply circuit 33, hot air gun power supply circuit 35, laser cleaning head power supply circuit 39; the power supply respectively through temperature display circuit 30, stirring motor power supply circuit 33, hot air gun power supply circuit 35 and laser cleaning head power supply circuit 39 to temperature display screen 30-1, stirring motor 25, automatic spray gun 21 and laser head 19 power supply.

[0052] As shown in the figure, Figure 9 and Figure 11 As shown in the figure, a gas path system of a coating in-situ spraying fixed-point repair device, the gas path system includes spray gun atomizing mouth circuit 31, tank gas inlet circuit 32, hot air gun gas inlet circuit 34, spray gun feed inlet circuit 36, spray gun control port circuit 40 and three-position four-way valve circuit 14; the gas inlet pipe respectively through spray gun atomizing mouth circuit 31, tank gas inlet circuit 32 and three-position four-way valve circuit 14 to spray gun atomizing mouth, tank gas inlet and three-position four-way valve gas supply; three-position four-way valve respectively through hot air gun gas inlet circuit 34 and spray gun control port circuit 40 to hot air gun gas inlet and spray gun control port gas supply; tank gas inlet through spray gun feed inlet circuit 36 to spray gun feed inlet gas supply.

[0053] The above only for the preferred embodiment of the present application, and not to limit the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A coating in-situ spray spot repair apparatus, characterized by, The repairing device comprises a telescopic frame, a laser head assembly, a spray gun head assembly and a heating head assembly; the telescopic frame comprises a triangular suction disc, a mounting head, a three-way switch and a telescopic arm; the mounting head is mounted on the triangular suction disc by screws, and the three-way switch and the telescopic arm are mounted on the mounting head by screws respectively; the laser head assembly, the spray gun head assembly and the heating head assembly are movably connected with the telescopic arm respectively.

2. A coating in-situ spray spot repair apparatus as claimed in claim 1, wherein: The mounting head comprises a connecting rod fixed block, a bearing fixed sleeve, a rolling bearing and a fixed joint; the connecting rod fixed block is mounted on the bearing fixed sleeve by screws; the rolling bearing is embedded into the bearing fixed sleeve, and then the fixed head is inserted into the rolling bearing; the fixed block is movably connected with the telescopic arm by a knob; the fixed head is mounted above the triangular suction disc by screws.

3. The in-situ coating spray spot repair apparatus of claim 1, wherein, The three-way switch comprises a three-way switch mounting plate and a three-position four-way valve; the upper end surface of the three-way switch mounting plate is connected with the three-position four-way valve by screws; the lower end surface of the three-way switch mounting plate is fixedly connected with the upper surface of the fixed block by screws.

4. The in-situ coating spray spot repair apparatus of claim 1, wherein, The telescopic arm has three groups, and each group of the telescopic arm comprises a first telescopic rod, a second telescopic rod and a fixed head; the first telescopic rod and the second telescopic rod are movably connected, and the second telescopic rod and the fixed head are movably connected.

5. The in-situ coating spray spot repair apparatus of claim 1, wherein, The laser head assembly comprises a fixed plate, a laser head and a telescopic limiting rod; the laser head is fixedly mounted on the fixed plate by screws; the telescopic limiting rod is fixedly mounted on the plate by screws; the plate is connected with the fixed block by screws.

6. The in-situ coating spray spot repair apparatus of claim 1, wherein, The spray gun head assembly comprises a spray gun fixed body, a telescopic limiting rod, an automatic spray gun and a tank; the tank comprises a tank cover, a piston, a piston port, a tank body, a welding part, a charging hole, a discharging port, a stirring hole, a stirring motor and a fixed cap; the piston is put into the tank through the piston port on the tank body, the tank cover is screwed onto the tank body by threads, the required paint is injected into the tank through the charging hole on the tank body, the tank is filled with paint until the piston abuts against the tank cover, then the charging hole is covered with the sealing cap, and the stirring motor is put into the stirring hole on the tank body; the stirring motor is fixed by the fixed cap, the welding part of the tank body is welded on the wall of the second telescopic rod, the joint of the tank cover is connected with the air pipe, and the discharging port of the tank body is connected with the feeding port of the automatic spray gun.

7. The apparatus of claim 1, wherein the apparatus is a coating in-situ spray spot repair apparatus. The heating head assembly comprises a fixed joint, an infrared temperature sensor, a heating device, a hot air nozzle and a temperature display screen; the fixed joint is fixedly connected with the fixed block, and the infrared temperature sensor passes through the fixed joint and is connected with the fixed joint by screws.

8. The in-situ coating spray spot repair apparatus of claim 7, wherein, The heating device comprises a sleeve, a heating wire and a connecting head; the connecting head is connected with the air pipe, air flow is sprayed out from the hot air nozzle through the sleeve, the hot air nozzle is screwed on one end of the sleeve by threads, the heating wire is connected with the power supply, the air flow is heated, and the hot air is sprayed out from the hot air nozzle; the infrared temperature sensor detects the infrared radiation temperature of the repaired surface in real time to monitor the temperature of the repaired surface, and displays the temperature in real time through the temperature display screen.

9. A power supply system for the repair apparatus as claimed in any one of claims 1 to 8, characterized in that, The power supply system comprises a temperature display circuit, a stirring motor power supply circuit, a hot air gun power supply circuit and a laser cleaning head power supply circuit; The power supply is respectively connected with the temperature display screen, the stirring motor, the automatic spray gun and the laser head through the temperature display circuit, the stirring motor power supply circuit, the hot air gun power supply circuit and the laser cleaning head power supply circuit.

10. An air circuit system for the repair apparatus as claimed in any one of claims 1 to 8, characterized in that, The gas path system comprises a spray gun atomizing port line, a material tank gas inlet line, a hot air gun gas inlet line, a spray gun feed port line, a spray gun control port line and a three-position four-way valve line; the gas inlet pipe supplies gas to the spray gun atomizing port, the material tank gas inlet and the three-position four-way valve through the spray gun atomizing port line, the material tank gas inlet line and the three-position four-way valve line respectively; the three-position four-way valve supplies gas to the hot air gun gas inlet and the spray gun control port through the hot air gun gas inlet line and the spray gun control port line respectively; The material tank gas inlet supplies gas to the spray gun feed port through the spray gun feed port line.

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